Section 27 Firewall … Page 27-2, Step 5.
Step 5, Final drilled all the holes in common to the Items listed in Step 4; (F-1001B Upper Angle, F-1001C Lower Channel, F1010D Right Site Angle, F1010E L/R Center Angles, F-1001F L/R Diagonals Angles, (2) F-1001G Gussets, F-1001K Recess Box, F-1001M Left Side Angle, F-6122-1 Tri-Gear Brake Bracket, WD 1002 PC L/R, Upper Firewall Brackets, WD-1003 PC L/R Lower Firewall Brackets, the 2 F-1001J L/R Longeron Gussets and the WD-1004 Nose Gear Tension Fittings ) to the stainless steel F-1001A Firewall Bulkhead assembly
Step 6, Dissembled all the previous listed and drilled parts and then dimpled the forward side of the Firewall assembly for installation of the flush AN426 rivets. Also, dimpled the R-1000 Recess Box to accept the AN426 rivets. Time 3 hours
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